<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar-box">
                <img src="../assets/tx.jpg" alt="">
            </div>
            <!-- 表单区域 ref获取表单元素-->
            <el-form ref="loginFormRef" :rules="loginFormRules" :model="loginForm" label-width="0px" class="login_form">
            <!-- 用户名 -->
            <el-form-item prop="username">
                <el-input  prefix-icon="el-icon-user" v-model="loginForm.username"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item  prop="password">
                <el-input  prefix-icon="el-icon-lock" v-model="loginForm.password" type="password"></el-input>
            </el-form-item>
            <!-- 按钮 -->
            <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default{
    data(){
        return{
            // 这是登录页面的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            //这是表单的验证规则对象
            loginFormRules:{
                // 验证用户名是否合法
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名长度在 3 到 10 个字符', trigger: 'blur'}],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur'}
                ]
            }
        }
    },
    methods:{
        // 点击重置按钮重置表单
        resetLoginForm(){
           this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
                if(!valid) return;
                const {data:res} = await this.$http.post('login',this.loginForm);
                if(res.meta.status !==200)return this.$message.error('登录失败!')
                this.$message.success('登陆成功！');
                //token保存在sessionstorage中， 因为tokenhi只在网站打开期间才生效
                window.sessionStorage.setItem("token",res.data.token);
                this.$router.push("/home")
            })
        }
    }
}


</script>
<style lang="less" scoped>
//加上scope说明样式只在该组件内生效
.login_container{
    background-color: #70c0d4;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    border-radius: 20px;
}
.avatar-box{
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    height: 130px;
    width: 130px;
    border: 1px solid rgb(255, 255, 255);
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px rgb(179, 214, 222);
    background-color: white;
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
    }
}
.btns{
    position: relative;
    left: 32%;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 30px;
    box-sizing: border-box;
}
</style>